The work is devoted to the choice of optimal parameters of laser controlled thermocracking (LСT) when cutting products with a complex curvilinear contour. With this purpose the LCT mathematical model is considered wh...The work is devoted to the choice of optimal parameters of laser controlled thermocracking (LСT) when cutting products with a complex curvilinear contour. With this purpose the LCT mathematical model is considered when a laser beam and coolant transfer from a rectilinear site to a non-rectilinear contour with given radius R. The obtained findings allow proper adjustment of LCT modes to ensure a higher quality of cutting the glass.展开更多
We simulate some laser output patterns observed in our previous experiment employing superposition of Laguerre- Gaussian modes. The rotating pattern is qualitatively analysed from the point of contemporary spatial bur...We simulate some laser output patterns observed in our previous experiment employing superposition of Laguerre- Gaussian modes. The rotating pattern is qualitatively analysed from the point of contemporary spatial burning hole effect of the lasing crystal.展开更多
Theoretical calculation of the differential cross section （DCS） for elastic electron-helium scattering in the presence of a bichromatic CO2 laser field is carried out in the first Born approximation with a simple sc...Theoretical calculation of the differential cross section （DCS） for elastic electron-helium scattering in the presence of a bichromatic CO2 laser field is carried out in the first Born approximation with a simple screening electric potential. The two components of the laser field have the frequencies w and 2w, which are out of phase by an arbitrary scale φ. The variations of the differential cross section as a function of the phase angle φ in the domain 0°≤ φ ≤360° are presented. We discuss the influence of the number of photons exchanged on the phase-dependee effect. Moreover, for different scattering angles and incident electron energies, the DCS has outstanding ditferences. These illustrate that the two parameters have important effects on the differential cross section and the screening electric potential is effective.展开更多
文摘The work is devoted to the choice of optimal parameters of laser controlled thermocracking (LСT) when cutting products with a complex curvilinear contour. With this purpose the LCT mathematical model is considered when a laser beam and coolant transfer from a rectilinear site to a non-rectilinear contour with given radius R. The obtained findings allow proper adjustment of LCT modes to ensure a higher quality of cutting the glass.
基金Supported by the National Natural Science Foundation of China under Grant Nos 10534020 and 60478009.
文摘We simulate some laser output patterns observed in our previous experiment employing superposition of Laguerre- Gaussian modes. The rotating pattern is qualitatively analysed from the point of contemporary spatial burning hole effect of the lasing crystal.
基金Supported by the National Natural Science Foundation of China under Grant No 10574039, and the Science Foundation for Young Scientists of Henval Normal University under Grant No 2005004.
文摘Theoretical calculation of the differential cross section （DCS） for elastic electron-helium scattering in the presence of a bichromatic CO2 laser field is carried out in the first Born approximation with a simple screening electric potential. The two components of the laser field have the frequencies w and 2w, which are out of phase by an arbitrary scale φ. The variations of the differential cross section as a function of the phase angle φ in the domain 0°≤ φ ≤360° are presented. We discuss the influence of the number of photons exchanged on the phase-dependee effect. Moreover, for different scattering angles and incident electron energies, the DCS has outstanding ditferences. These illustrate that the two parameters have important effects on the differential cross section and the screening electric potential is effective.
